CN212676127U

CN212676127U - Integrated electric operating device of three-position switch of ring main unit

Info

Publication number: CN212676127U
Application number: CN202021984210.6U
Authority: CN
Inventors: 赖安定; 郭智强; 吴延祥
Original assignee: Fujian Hongke Electric Power Technology Co ltd
Current assignee: Fujian Hongke Electric Power Technology Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-03-09
Anticipated expiration: 2030-09-11

Abstract

The utility model provides a three station switch's of looped netowrk cabinet electronic operating means that integrates, includes relay board and circuit board terminal row, be equipped with on the relay board the circuit board terminal row, be connected with external power supply, external direct current motor on the circuit board terminal row, close to lead to auxiliary contact, keep apart auxiliary contact, ground connection auxiliary contact, close to lead to button switch, isolation button switch and ground connection button switch, it has motor relay, closes to lead to contact relay, isolation contact relay and ground connection contact relay to correspond the integration on the relay board. The utility model discloses an electric operating means integrates can realize closing of three station switches of a key formula electrical control looped netowrk cabinet leads to, keeps apart and the ground connection action, and the volume of the components and parts that have significantly reduced moreover makes the volume miniaturization of product, and greatly reduced wiring work load moreover realizes the positive and negative rotation of motor automatically, need not the CPU chip and handles, need not to judge the direction of rotation, avoids the interference problem.

Description

Integrated electric operating device of three-position switch of ring main unit

Technical Field

The utility model belongs to the technical field of the electrical equipment technique and specifically relates to indicate a looped netowrk cabinet three-station switch's electric operating means integrates.

Background

The ring main unit is a general name of a load switch cabinet and a combined electrical appliance cabinet applied to a ring main power supply unit, has the functions of flexibly matching and combining according to different electrical appliance wiring, realizing ring main power supply and electric energy distribution with different functions, and has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like.

At present, a switch unit of a ring main unit mainly comprises a circuit breaker switch and a three-position switch, wherein the three-position switch drives a screw rod (a screw rod moves a knife) to rotate by a motor, and the screw rod drives a moving contact to move so as to complete the functions of isolation, separation and combination and grounding, so that the requirement of electric power operation is completely met. However, the conventional electric operating device of the three-position switch mainly uses a combination of a contactor and a terminal to realize an electric control function. This wiring method has the following disadvantages: (1) the combined product has large volume due to multiple components and large volume, and is inconvenient to install and transport; (2) the number of wiring terminals is large, so that the workload of wiring is increased, the failure probability is increased, and the later maintenance and repair are not facilitated; (3) the rotation direction of the motor usually needs to be processed by a CPU chip, and the problem of interference is easily caused. Therefore, an integrated electric operating device of a three-position switch of a ring main unit is provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a three station switch's of looped netowrk cabinet electric operating means that integrates to there is the many bulky, the wiring work load of components and parts shortcoming such as the direction of rotation of big, the motor of rotation needs the CPU chip to handle in the electric operation control of solving current three station switch.

The utility model adopts the following technical scheme:

an integrated electric operating device of a three-station switch of a ring main unit comprises a relay board and a circuit board terminal row, wherein the circuit board terminal row is arranged on the relay board, an external power supply, an external direct current motor, an on auxiliary contact, an isolation auxiliary contact, an earth auxiliary contact, an on button switch, an isolation button switch and an earth button switch are connected on the circuit board terminal row, a motor relay, an on contact relay, an isolation contact relay and an earth contact relay are correspondingly integrated on the relay board, the on button switch, the on auxiliary contact, the on contact relay and the motor relay form a closed loop through a copper foil wire on the relay board, the isolation button switch, the isolation auxiliary contact, the isolation contact relay and the motor relay form a closed loop through the copper foil wire on the relay board, the grounding button switch, the grounding auxiliary contact, the grounding contact relay and the motor relay form a closed loop through the copper foil wire on the relay board.

Further, the utility model discloses an electric operating means integrates still includes a button plate, installs on this button plate close logical button switch, isolation button switch and ground connection button switch.

Further, the utility model discloses an integrate electric operating means still includes a switch circuit board, and this switch circuit board is fixed in the relay board with between the button board, be equipped with on the switch circuit board respectively with close to lead to button switch, isolation button switch and ground connection button switch corresponding close to lead to contact, isolation contact and ground contact, close to lead to contact, isolation contact and ground contact respectively through the patchcord with circuit board terminal row corresponds the connection.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

the utility model discloses an electronic operating means integrates, the last motor relay that has integrateed of relay board, close and lead to the contact relay, keep apart contact relay and ground contact relay, and be connected with circuit board terminal row, be connected with external power supply on the circuit board terminal row, external direct current motor, close and lead to the auxiliary contact, keep apart the auxiliary contact, ground connection auxiliary contact, close and lead to button switch, keep apart button switch and ground connection button switch, can realize closing of a key formula electrical control looped netowrk cabinet triplex position switch and lead to, keep apart and ground connection action, and the volume of components and parts has significantly reduced, make the volume miniaturization of product, and greatly reduced wiring work load, automatically, realize the positive reverse rotation of motor, need not the CPU chip and handle, need not to judge the direction of rotation, avoid the interference problem.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a right side view of the present invention.

Fig. 3 is a wiring schematic diagram of the present invention.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings. Numerous details are set forth in the following description in order to provide a thorough understanding of the present invention, but it will be apparent to one skilled in the art that the present invention may be practiced without these details. Well-known components, methods and processes are not described in detail below.

An integrated electric operating device of three-station switch of ring main unit, refer to fig. 1 and fig. 2, includes relay board 1, circuit board terminal row 2, button board 3 and switch circuit board 4. The relay board 1 is integrated with an on contact relay 11, an off contact relay 12, a ground contact relay 13, and a motor relay (not shown). Referring to fig. 3, the relay board 1 is further provided with the circuit board terminal strip 2, and the circuit board terminal strip 2 is connected with an external power supply, an external dc motor M, an on auxiliary contact LW2, an isolation auxiliary contact LW3, an earth auxiliary contact LW1, an on push-button switch SB1, an isolation push-button switch SB2 and an earth push-button switch SB 3.

The button plate 3 is provided above the relay board 1, and the on button switch SB1, the disconnecting button switch SB2, and the grounding button switch SB3 are attached to the button plate 3. Still be equipped with a switch board 4 between button plate 3 and the relay board 1, be equipped with on the switch board 4 respectively be equipped with close lead to button switch SB1, isolator button switch SB2 and ground button switch SB3 corresponding close lead to contact 41, isolation contact 42 and ground contact 43, close lead to contact 41, isolation contact 42 and ground contact 43 respectively through the patchcord with circuit board terminal row 2 corresponds the connection.

The on button switch SB1, the on auxiliary contact LW2, the on contact relay 11 and the motor relay form a closed loop through a copper foil wire on the relay board 1; the isolating button switch SB2, the isolating auxiliary contact LW3, the isolating contact relay 12 and the motor relay form a closed loop through copper foil wires on the relay board 1; and the grounding button switch SB3, the grounding auxiliary contact LW1, the grounding contact relay 13, and the motor relay form a closed loop by the copper foil wires on the relay board 1.

The following operation fig. 3 illustrates the specific work flow of the integrated electric operation device of the ring main unit three-position switch of the utility model:

1. to place the three-position switch in a grounded state: and (4) pressing a grounding button switch (SB 3), if the movable contact is in an isolated state, reversely rotating the motor until the movable contact touches a grounding auxiliary contact (LW 1) and then stopping the motor, and enabling the three-position switch to be in a grounding state. If the moving contact is in a closed state, the motor rotates reversely until the moving contact touches the grounding auxiliary contact (LW 1), and then the motor stops, and the three-station switch is in a grounding state; if the motor rotates forwards, the three-position switch can reach an isolation state firstly, the motor automatically rotates backwards until the moving contact touches the grounding auxiliary contact (LW 1), then the motor stops, and the three-position switch is in a grounding state.

2. To keep the three-position switch in an isolated state: and pressing an isolating button switch (SB 2), if the moving contact is in an earthing state, the motor rotates forwards until the moving contact touches an isolating auxiliary contact (LW 3), then the motor stops, and the three-position switch is in an isolating state. If the moving contact is in a closed state, the motor rotates forwards until the moving contact touches an isolation auxiliary contact (LW 3), and then the motor stops, and the three-station switch is in an isolation state; if the motor rotates reversely, the three-position switch can reach the grounding state first and then the motor automatically rotates forwards until the moving contact contacts with the isolation auxiliary contact (LW 3), and then the motor stops, and the three-position switch is in the isolation state.

3. To make the three-position switch in an on state: and (4) pressing an on-off button switch (SB 3), if the moving contact is in an isolated state, reversely rotating the motor until the moving contact touches an on-off auxiliary contact (LW 2) and then stopping the motor, and enabling the three-position switch to be in an on-off state. If the moving contact is in a grounding state, the motor rotates forwards until the moving contact touches the closing auxiliary contact (LW 2), and then the motor stops, and the three-position switch is in a closing state.

The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims

1. The utility model provides a three station switch's of looped netowrk cabinet electric operating means that integrates which characterized in that: including relay board and circuit board terminal row, be equipped with on the relay board circuit board terminal row, be connected with external power supply, external DC motor on the circuit board terminal row, close to lead to auxiliary contact, keep apart auxiliary contact, ground connection auxiliary contact, close to lead to button switch, isolation button switch and ground connection button switch, it has motor relay, closes to lead to contact relay, isolation contact relay and ground connection contact relay to correspond to integrate on the relay board, close to lead to button switch, close to lead to auxiliary contact, close to lead to contact relay and motor relay and pass through copper foil line on the relay board forms a closed circuit, isolation button switch, isolation auxiliary contact, isolation contact relay and motor relay pass through copper foil line on the relay board forms a closed circuit, ground connection button switch, ground connection auxiliary contact, The grounding contact relay and the motor relay form a closed loop through the copper foil wire on the relay board.

2. An integrated electric operation device of a three-position switch of a ring main unit as claimed in claim 1, characterized in that: the button board is provided with the closing button switch, the isolating button switch and the grounding button switch.

3. An integrated electric operation device of a three-position switch of a ring main unit as claimed in claim 2, characterized in that: the switch circuit board is fixed between the relay board and the button board, a closing contact, an isolating contact and a grounding contact which correspond to the closing button switch, the isolating button switch and the grounding button switch are arranged on the switch circuit board respectively, and the closing contact, the isolating contact and the grounding contact are correspondingly connected with the terminal row of the circuit board through plug wires respectively.